Where can I find Rye roll in Greppen?

Rye roll can also be found in these cities:

Altdorf Baar Buchrain Buochs Cham Ebikon Emmen Goldau Hitzkirch Horw Ibach SZ Ingenbohl Kriens Küssnacht Lucerne Malters Rain Rotkreuz ZG Sarnen Sempach Stans Steinhausen Unterägeri Urswil Wädenswil Zug

You can also find this in Greppen:

Semolina Porridge Cake Vanilla Sugar Jelly Ice Cream Desserts Meat Products Lemonades Instant Coffee Pumpkin Seed Roll Canned Meat